کتاب های آموزش Simatic S5 و LOGO اینجا موجوده می تونید با عضویت در سایت ، مجانی دانلودشون کنید:
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کتاب های آموزش Simatic S5 و LOGO اینجا موجوده می تونید با عضویت در سایت ، مجانی دانلودشون کنید:
کد:http://www.ir-micro.com/modules.php?name=Content&pa=list_pages_categories&cid=21
دوستان تو رو خدا در ادامه راه کمک کنید مثلا اگه کسی کتابی یا مقاله ای در مورد بقیه داره یا حتی پروژه هایی که با این پی ال سی ها انجام شده ،بی زحمت بزاره !
حتی اگه سایتی می شناسید که خوب درس داده بگید!
ادامه درس از من در روز های بعد!
دوست من حداقل يه عكسي ميزاشتي تا ببينيم ايني كه گفتي چه شلكيه...
با سلام اگه اون پی دی اف ها رو دانلود کنی توش عکس پی ال سی یا مینی پی ال سی مربوطه وجود داره!:27:نقل قول:
در ضمن چون برنامه PLC ها حجم بالایی در حد یه سی دی داره و من از دیال آپ استفاده می کنم پس نمیتونم آپشون کنم بنابراین کسی می زاره که هیچی اما اگه نه ! هر کی خواست فقط هزینه پستیش رو بپردازه می زنم روی سی دی واسش می فرستم:20:
من که خیلی به این بحث علاقه دارم اگه چیزی پیدا کردم حتما می ذارم.تشکر از شما.نقل قول:
راستی این پی دی اف رو که گذاشتین لینکش خرابه:
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اینم یه منبع انگلیسی زبان که عکس هم داره:
CHAPTER 1 Process control system
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Introduction
Generally speaking, process control system is made up of a group of electronic devices and equipment that provide stability, accuracy and eliminate harmful transition statuses in production processes. Operating system can have different form and implementation, from energy supply units to machines. As a result of fast progress in technology, many complex operational tasks have been solved by connecting programmable logic controllers and possibly a central computer. Beside connections with instruments like operating panels, motors, sensors, switches, valves and such, possibilities for communication among instruments are so great that they allow high level of exploitation and process coordination, as well as greater flexibility in realizing an process control system. Each component of an process control system plays an important role, regardless of its size. For example, without a sensor, PLC wouldn’t know what exactly goes on in the process. In automated system, PLC controller is usually the central part of an process control system. With execution of a program stored in program memory, PLC continuously monitors status of the system through signals from input devices. Based on the logic implemented in the program, PLC determines which actions need to be executed with output instruments. To run more complex processes it is possible to connect more PLC controllers to a central computer. A real system could look like the one pictured below:
1.1 Conventional control panel
At the outset of industrial revolution, especially during sixties and seventies, relays were used to operate automated machines, and these were interconnected using wires inside the control panel. In some cases a control panel covered an entire wall. To discover an error in the system much time was needed especially with more complex process control systems. On top of everything, a lifetime of relay contacts was limited, so some relays had to be replaced. If replacement was required, machine had to be stopped and production too. Also, it could happen that there was not enough room for necessary changes. control panel was used only for one particular process, and it wasn’t easy to adapt to the requirements of a new system. As far as maintenance, electricians had to be very skillful in finding errors. In short, conventional control panels proved to be very inflexible. Typical example of conventional control panel is given in the following picture.
In this photo you can notice a large number of electrical wires, time relays, timers and other elements of automation typical for that period. Pictured control panel is not one of the more “complicated” ones, so you can imagine what complex ones looked like.
Most frequently mentioned disadvantages of a classic control panel are:
- Too much work required in connecting wires
- Difficulty with changes or replacements
- Difficulty in finding errors; requiring skillful work force
- When a problem occurs, hold-up time is indefinite, usually long.
1.2 Control panel with a PLC controller
With invention of programmable controllers, much has changed in how an process control system is designed. Many advantages appeared. Typical example of control panel with a PLC controller is given in the following picture.
Advantages of control panel that is based on a PLC controller can be presented in few basic points:
1. Compared to a conventional process control system, number of wires needed for connections is reduced by 80%
2. Consumption is greatly reduced because a PLC consumes less than a bunch of relays
3. Diagnostic functions of a PLC controller allow for fast and easy error detection.
4. Change in operating sequence or application of a PLC controller to a different operating process can easily be accomplished by replacing a program through a console or using a PC software (not requiring changes in wiring, unless addition of some input or output device is required).
5. Needs fewer spare parts
6. It is much cheaper compared to a conventional system, especially in cases where a large number of I/O instruments are needed and when operational functions are complex.
7. Reliability of a PLC is greater than that of an electro-mechanical relay or a timer.
1.3 Systematic approach in designing an process control system
First, you need to select an instrument or a system that you wish to control. Automated system can be a machine or a process and can also be called an process control system. Function of an process control system is constantly watched by input devices (sensors) that give signals to a PLC controller. In response to this, PLC controller sends a signal to external output devices (operative instruments) that actually control how system functions in an assigned manner (for simplification it is recommended that you draw a block diagram of operations’ flow).
Secondly, you need to specify all input and output instruments that will be connected to a PLC controller. Input devices are various switches, sensors and such. Output devices can be solenoids, electromagnetic valves, motors, relays, magnetic starters as well as instruments for sound and light signalization.
Following an identification of all input and output instruments, corresponding designations are assigned to input and output lines of a PLC controller. Allotment of these designations is in fact an allocation of inputs and outputs on a PLC controller which correspond to inputs and outputs of a system being designed.
Third, make a ladder diagram for a program by following the sequence of operations that was determined in the first step.
Finally, program is entered into the PLC controller memory. When finished with programming, checkup is done for any existing errors in a program code (using functions for diagnostics) and, if possible, an entire operation is simulated. Before this system is started, you need to check once again whether all input and output instruments are connected to correct inputs or outputs. By bringing supply in, system starts working.
منبع:
کد:http://www.electronicspal.com/plc/
این هم دوتا ایبوک:
کد:http://www.prm.ucl.ac.be/cours/meca2755/04-05/automate1.pdf
کد:http://www.prm.ucl.ac.be/cours/meca2755/04-05/automate2.pdf
سلام عزیزم
اول اینکه من خیلی خوشحال شدم این موضوع رو اینجا دیدم.بعد اینکه من تازه دارم از راه خصوصی برق صنعتی رو میخونم.مربی ما میگفت پی ال سی رو حتما یاد بگیرین و زمانش که برسه خودم بهتون میگم. حالا من میخواستم بدونم برای من که دیپلم ندارم و ریاضی افتضاحی دارم اما با انگلیسی میانه خوبی دارم و البته محصل هم نیستم یادگیری پی ال سی چطوره.اخه من فکر میکنم برنامه نویسی داره که مسلما کار بسیار مشکلیه یا شایدم برنامه نویسی هاش ساده هست؟ اخه مربی ما میگفت خیلی ساده هست. کلاسش هم پرسیدم مثل اینکه 3 ماهه هست . یعنی اینقدر راحته یاد گرفتنش؟
خلاصش اینکه خیلی دوست دارم بدونم پی ال سی یادگیریش تو چه مایه ای هست .
ممنون میشم راهنمایی کنین
سپاس:11:
دوست عزیز سلامنقل قول:
یادگرفتن برنامه نویسی پی ال سی مثه آب خوردنه!
یعنی اصلاً چیز خاصی نیست فقط باید مدار منطقی بلد باشی همین!
و البته برق صنعتی:31:
ریاضی و از این جور صحبت ها نمی خواد:27:
من کسی رو می شناسم که سیکل هم نداره اما بلده!:18:
من مي توانم آپ لود كنم فقط به من بكوييد چه چيز را در كجا و چگونه آپ لود منمنقل قول:
robat7